3. (20 points in total) A chemical manufacturer claims that the purity of his product never varies by more than 2%. Five batches were tested and given purity readings of 98.2, 97.1, 98.9, 97.7, and 97.9%.
申論題內容
(c). (5 points) What assumptions are made when you choose a test statistic for the hypothesis test above? Explain.
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